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UNITED STATES PATENT OFFICE.

JAMES H. STEBBINS, JR, OF NEW YORK, N. Y.

DYEING BLUE COLORS UPON TEXTILE FABRICS.

SPECIFICATION forming part of Letters Patent No. 255,349, dated March 21, 1882. Application filed February 1, 1882. (Specimens) To all whom it may concern:

Beit known that 1, JAMES H. STEBBINS,JI'., a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Producing a Blue Color in or upon a Textile Fiber or Fabrics, of which the following is a specification.

This invention relates to the production of a blue color produced by the action of diethylparaphenylendiamine chloride upon an all aline solution of alpha-naphthol in the presence of an oxidizing agent in or upon a textile fiber or fabrics.

In carrying out this invention I DIOOGL d as follows: For printing purposes I prepare or impregnate the cotton cloth or calico to be printed with an aqueous solution of the soda salt of alpha-naphthol, and then dry with dry heatat a temperature of about 150 Fahrenheit. This prepared cloth is then printed with a mixture of nitroso diethylaniline chloride and an alkaline solution of grape-sugar which has been made into a thickening or paste with starch, or otherwise, in the usual manner. After printing the blue coloris developed by steaming in the usual manner and then the printedcalico isxto be washed and cleared. Care should be taken that so much ofthe alkaline solution of grape-sugar is mixed with the nitroso-diethv ylanillne chloride as to completely reduce it into its base.

Another method for printing cotton cloth or calico is the following: I prepare or impregnate the cotton cloth or calico to be printed with an alkaline solution of grape-sugar, and then dry it with dry heat at a temperatureot' about 200 Fahrenheit. This prepared cloth isthen printed with a printing-color suitable for calico-printing, which may be prepared by mixing about ten pounds of nitroso-diethylaniline chloride, fourteen pounds ofalpha-naphthol, fourteen pounds of caustic-soda solution, (1.29 specific gravity,) and with sufiicient water to dissolve the mixture, and then with starchpaste or other suitable thickening the color thus prepared is ready for printing the cloth.

Another niethod for printing cotton cloth or calico is the following: I take ten pounds" of nitroso-dieth vlaniline chloride and dissolve it in one hundred pounds of water, then add fifteen pounds of zinc-(lust, and heat the mixseven pounds of soda salt of alpha-naphthol and sufficient starch-paste or other suitable thickening to make a suitable printing-color. The color thus prepared is ready for use and ought to be employed for printing without much delay, as upon standing the color isliable to decompose. With this prepared printing-color I impregnate or print the cloth or calico to be printed, and then steam in the usual way. The so prepared cloth or calico .is then passed through ahot aqueous solution of hichromate of potash, by which the blue color is more fully developed. The so printed cloth is then washed, soaped, and cleared in the usual way. By this method woven fabrics of Wool, and of cotton and wool mixed, and also woolen yarn, can be prepared and printed and the blue color developed thereon.

What I claim as new, and desire to secure by Letters Patent, is-

As a new article of manufacture, textile fiber, yarn, or cloth,'wl1ether knit or woven, having the herein-described color developed within or upon the same by the reaction in or uponthe fiber of nitrosodiethylaniline chloride and the soda salt of alpha-naphthol in the presence of anoxidizing a gent, substantially as set forth, or by any other means which will produce a like result.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witncsses.

JAMES H. STEBBINS, JR. [1. 5.] Witnesses :v

W. HAUFF, J. A. RUTHERFORD. 

